AISI 9310 Alloy Steel (UNS G93100)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
     Tempering
     Annealing
     Cold Working
     Welding
     Forging
     Forming
     Machinability
     Heat Treatment
     Hardening

Introduction

Alloy steels comprise a wide range of steels having compositions that exceed the limitations of Si, Va, Cr, Ni, Mo, Mn, B and C allocated for carbon steels. These steels contain elements such as chromium, cobalt, nickel, etc.

In comparison with carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments. Alloy steels can be subjected to unique melting and deoxidization processes for specific kind of applications.

AISI 9310 alloy steel is a low alloy steel containing molybdenum, nickel and chromium. The following datasheet provides an overview of AISI 9310 alloy steel.

Chemical Composition

The chemical composition of AISI 9310 alloy steel is outlined in the following table.

Element Content (%)
Nickel, Ni 3.00-3.50
Chromium, Cr 1.00-1.40
Manganese, Mn 0.45-0.65
Silicon, Si 0.15-0.30
Phosphorus, P 0.025 (max)
Sulfur, S 0.025 (max)
Molybdenum, Mo 0.08-0.15
Carbon, C 0.08-0.13

Physical Properties

The following table shows the physical properties of AISI 9310 alloy steel.

Properties Metric Imperial
Density 7.7-8.03 g/cm3 0.278-0.290 lb/in3
Melting point 1427 °C 2600°F

Mechanical Properties

The mechanical properties of AISI 9310 alloy steel are displayed in the following table.

Properties Metric Imperial
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson's ratio 0.33 0.33

Other Designations

Equivalent materials to AISI 9310 alloy steel are:

  • AMS 6260G
  • AMS 6265C
  • AMS 6267A

Fabrication and Heat Treatment

Tempering

AISI 9310 alloy steel is usually tempered at 149°C (300°F).

Annealing

AISI 9310 alloy steel is annealed at 857°C (1575°F) and then slowly cooled in the furnace.

Cold Working

Conventional methods are used to cold work AISI 9310 alloy steel that has good ductility in the tempered and hardened conditions.

Welding

AISI 9310 alloy steel has good weldability characteristics as it can be welded by a standard process along with the usage of established welding methods.

Forging

AISI 9310 alloy steel is forged at 1191°C (2175°F) down to 927°C (1700°F).

Forming

AISI 9310 alloy steel can be readily formed by conventional procedures as this steel has good ductility even in the tempered and quenched condition.

Machinability

AISI 9310 alloy steel can be machined by conventional methods and good results are obtained when this alloy steel is machined in the tempered or annealed condition.

Heat Treatment

AISI 9310 alloy steel is carburized by being heated at 927°C (1700°F) and then oil quenched. This alloy steel is then normalized at 899°C (1650°F), followed by air cooling and then tempering at 149°C (300°F).

Hardening

AISI 9310 alloy steel can be hardened by cold working or by thermal treatment and oil quenching.

Date Added: Sep 4, 2012 | Updated: Jul 15, 2013
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